具有真实感的三维虚拟特定人脸生成方法  

GENERATION OF REALISTIC 3 D SPECIFIC HUMAN FACE

作　　者：晏洁[1,2,3] 高文[1,2,3] 尹宝才 

机构地区：[1]哈尔滨工业大学计算机科学与工程系 [2]中国科学院计算技术研究所 [3]北京工业大学计算机科学系

出　　处：《计算机学报》1999年第2期147-153,共7页Chinese Journal of Computers

基　　金：国家自然科学基金;国家八六三高技术研究发展计划;教育部跨世纪优秀人才计划

摘　　要：三维人脸的计算机生成目前是一个具有挑战性的课题．如何在人脸复杂的、不规则的表面上建模以及如何反映出特定人脸间的个体差异是实现真实人脸模拟的两大主要困难所在．本文针对后者，提出了一种新的三维特定人脸生成方法，该方法基于人脸模型变形技术，允许模拟者在交互方式下将一般人脸几何模型和预先提供的特定人脸多方向图像之间进行特征校准，进而得到特定人脸三维模型．该模型将精确地反映特定人脸的诸特征，同时，这种变形技术还提供了一种获取特定人面部表情模型的有效方法．为了提高真实感，本文随之提出了一种新的纹理映射技术。Much progress has been made in the field of computer animation, but animating the human face has still remained a major challenge.The two chief difficulties of implementing realistic human face animation are:how to build up a model over the complex and irregular surface of human face and how to reflect the differences between specific human faces.This paper focuses on the latter problem,a new human face generation method using a three dimensional deformation technique is presented which allows interactive alignment of features in the general geometric face model with the features of the multi direction pictures of the specific human face which are pre provided by the animator.The deformation result is a 3 D face model of the specific human face,it precisely reflects the correspondence features of the specific human face.This deformation technique also provides an avaliable approach to obtain models of facial expression.To enhance the realism,this paper employs a new multi direction texture mapping technique which gets photometric information from pictures of multi direction to diminish the texture distortion.

关 键 词：人脸模型 纹理扭曲 图像处理 人脸生成 三维人脸 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]